高桩式LNG全容罐的地震作用计算

英文篇名：Seismic Calculation of Full Containment LNG Tank Supported on High Piles
中文刊名：化工设计
英文刊名：Chemical Engineering Design
作者：宋延杰 ; 李金光 ; 郑建华
英文作者：Song Yanjie ; et al (China Huanqiu Contracting & Engineering Corporation ; Beijing 100029)
中文关键词：高桩式 ; LNG储罐 ; 附加质量法 ; 地震
英文关键词：high piles LNG tank additional mass method seismic
出版日期：2013-02-15
机构：中国寰球工程公司;
年：2013
期：01
出版单位：化工设计

摘要

本文以弹性嵌固模型模拟地面以下的桩土相互作用及以Housner理论建立的附加质量模型模拟内罐的液固耦合作用为基础建立了高桩式LNG全容罐的地震作用计算模型。以实际工程为例,建立了三维有限元模型,对LNG储罐在空罐和满罐这两种状态进行了OBE、SSE地震作用下的反应谱分析,然后根据荷载组合得到了桩顶的最不利组合结果。
This paper simulates the underground pile and soil interaction by means of elastic fixed model and the liquid-solid coupling of the inner tank by using additional mass model established based on the Housner theory to establish the seismic calculation model for the full containment LNG tank supported on high piles.Based on the actual project as an example,the three-dimensional finite element model is established.The OBE and SSE earthquake response spectrum analysis are carried out for the LNG storage tank under the conditions of empty tank and full tank,and then according to the load combination the most unfavorable combination result at the top of the pile is got in this paper.

引文

1GB/T20368-2006,液化天然气(LNG)生产,储存和装运[S].
    2 NFPA 59A-2006,Standard for the Production,Storage,andHandling of Liquefied Natural Gas(LNG)[S].
    3 G.W.Housner,Dynamic Pressures on Accelerated FluidContainers[J].Bull.Seismi.Soc.Am,1957,47(1):15-35.
    4 Sudhir K Jain,O.R.Jaiswal,Modified proposed provisions foraseismic design of liquid storage tanks:Part I-codal provi-sions,Journal of Structural Engineering,Vol.32,No.3,Au-gust-September 2005 pp.195-206.
    5郑建华,李金光,李艳辉.全容式LNG储罐的地震作用计算模型研究[J].化工设计,2012,22(2):11-14.
    6 EN1998-1:2004,Design of structures for earthquake resist-ance-Part 1:General rules,seismic actions and rules forbuildings.
    7GB50011-2010,建筑抗震设计规范[S].